Flash flood warning in effect for Orange and Sullivan counties

The National Weather Service has issued a flash flood warning until 9 p.m. tonight for Sullivan and Orange counties.

A slow-moving front will cause heavy rain and thunderstorms to develop this evening. Thunderstorms with heavy rain could produce hourly rainfall rates of one to two inches with localized totals of several inches possible.

Areas that have already received heavy rainfall over the last couple of days would be most prone to flash flooding. Excessive runoff from heavy rainfall will cause flooding of small creeks and streams, highways and underpasses.